clang/test/Index/comment-objc-decls.m: Try to fix r169193, to add x86_64-darwin.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@169199 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Index/comment-objc-decls.m b/test/Index/comment-objc-decls.m
index ec989b2..7844ae5 100644
--- a/test/Index/comment-objc-decls.m
+++ b/test/Index/comment-objc-decls.m
@@ -1,6 +1,6 @@
 // RUN: rm -rf %t
 // RUN: mkdir %t
-// RUN: c-index-test -test-load-source all -comments-xml-schema=%S/../../bindings/xml/comment-xml-schema.rng %s > %t/out
+// RUN: c-index-test -test-load-source all -comments-xml-schema=%S/../../bindings/xml/comment-xml-schema.rng -target x86_64-apple-darwin10 %s > %t/out
 // RUN: FileCheck %s < %t/out
 
 // Ensure that XML we generate is not invalid.